Improvement in revolving fire-arms



' charge.

UNITED STATES PATENT OFFICE.

E. K. ROOT, OF HARTFORD, CONNECTICUT.

Specification forming part of Letters Patent No. 13,999, (la-ted December 25,1855.

To all whom it 'may concern:

Be it known that I, E. K. Boor, of Haitford, inthe State of Connecticut., have made a certain new and usefulImprovementin Many- Chambered Rotating-Breech Fire-Arms; and I do hereby declare that the following is a full, clear, and exact description thereof, ret'- erence being had to the accompanying drawings, making part of this speciheation, in which- Figure 1 is a side elevation; Fig. 2, a longitudinal vertical section, and Fig. 3 a bottom view.

The saine letters indicate like parts in all the figures.

My said invention relates to an improvement on that class of rotating-breech tire-arms in which the breech is rotated to bring the several chambers in succession to the lille of the barrel by a driving-pin attached 'to a slide and working in longitudinal and diagonal grooves cut in the periphery ot' the rotating breech.

In this class ot arms as heretofore made the driving-pin has been connected with and operated by the hammer or cock or some part of the lock connected and moving with the cock or hammer, so that if the driving-pin meets with any obstruction in the longitudinal 'grooves in the act of tiring the momentum of the hammer will he so i'ar checked as not to have force enough to explode the cap.

The object of my improvement is to avoid this difficulty; and to this end my said invention consists in combining the driving-pin that works in the grooves to rotate and hold the breech with a slide below having a loop or equivalent for the reception of the triggertinger, by which it is moved back and forth, and adapted to act on the lock at the end of its back motion to liberate the hammer and re the load.

In the accompanying drawings, a represents the many-chambered rotating breech with the well-known arrangement of longitudinal and diagonal grooves l), in which the driving-pin c works to rotate the breech to bring the chambers successively in line with the barrel, and to hold each chamber in line during the dis- Ihis pin is fitted to a sliding block, d, and provided in the usual manner with a spring, e, to force it against the bottom ofthe grooves and adapt itself to their varying depth in manner well known; and the sliding block is adapted to slide freely but accurately in a slot, f, in the bottom plate, g, below the rotating breech and parallel therewith; and below this plate the block is formed into a loop or eye, h, of suitable shape to receive the trigger-finger, by which ythe block, with its driving-pin, can be pushed t'orward and drawn back the required distance for rotating the breech. After the sliding block has been drawn back sufficiently far to pass out of one ofthe diagonal grooves to turn the breech the required distance to bring the next chaml ber in line with the barrel, and to enter one of the longitudinal grooves to hold the chamber in line, its rear end then strikes against the end of the springeatch t', which holds the tumblerj of the cock or hammer k, and liberates it that the cock or hammer may be forced onto the cap with the full force of the mainspring. In this way the driving-pin cannot present any impediment to the motion of the cock or hammer.

The arm can be operated with great rapidity by pushing forward the slide of the driving-pin with the trigger-finger while the hammer is brought to the full-cock with the thumb, and then by pulling` back the slide with the trigger-finger the breech is rotated, held in place, and the hammer liberated by the one motion.

Instead of making the grooves on the periphery of the rotating breech, they may be made on the periphery7 of a small cylinder,-l, mounted on journals in the slotj', as represented in Figs. et and 5, placed. below and parallel with the rotating breech, and geared therewith by a pinion, m, on the end ot' the cylinder and corresponding cogs, 72,011 the periphery of the breech. When thus modified the number of grooves in the periphery of the cylinder l should be proportioned to the difference between the diameter of the range of cogs on the breech and the pinion on the cylinder.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

Combining the driving-piu that works in the grooves to rotate and hold the breeeliu,V

line with a slide below adapted to the reception ot' and to be operated by the trigger-tinger, and acting on the lock at the end ofthe back motion to liberate the cock or hammer to discharge the load, substantially as described.

E. K. ROOT. Witnesses:

J. N. STANGLIFE, SAM-L. COLT. 

